Medal Identification

Hi anyone got a good (pref.on line)source for medal identification?I have a quarter size round, red/white medal with an eagle and a red with white stripe shield agross the bottom it reads OSTERREICH what does this mean? Also I have a sm. (dime size) round gold star with US on it again what is its meaning? Finally what is a sterling army-navy production award pin for? Thanks in advance,Lyn